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镧系元素杂多化合物的制备及研究七十年代后逐渐引起了人们的注意。这类化合物的制备在理论研究和实际应用方面都具有一定的意义。已知具有 Keggin 结构的杂多阴离子 XW_(12)O_(40)~(n-)(x=B、Sj、Ge、P、As)在合适的 PH 条件下可以形成11一系列不饱合杂多阴离子 XW_(11)O_(39)~(+4-[4]),后者能都作为配体与许多金属元素的离子生成杂多化合物。据此我们制备了未见文献报道的 K_(13)[Ln(GeW_(11)O_(39))_2](Ln=La、C、Pr、Sm)化合物,并研究了其物理化学性质。
Preparation and research of lanthanide heteropoly compounds gradually attracted people’s attention after seventies. Preparation of these compounds in the theoretical research and practical applications have a certain significance. The heteropolyanion XW 12 O 40 ~ (n -) (x = B, Sj, Ge, P, As) with Keggin structure is known to form 11 series of unsaturated hetero The polyanions XW 11 O 39 ~ + 4- [4] can all form heteropoly compounds as the ligands and the ions of many metal elements. Based on this, we have prepared and studied the physicochemical properties of K_ (13) [Ln (GeW_ (11) O_ (39)) _2] (Ln = La, C, Pr, Sm)